US 2002/0163154 A1 · Rear wheel suspension system in vehicle

Abstract

A rear wheel suspension system for a four-wheeled vehicle suitable for attaining vehicle weight reduction, setting weight distribution of the vehicle, improving vehicle design freedom, and decreasing the number of components as compared to conventional rear wheel suspension systems. The system includes a joint member mounted in a rear portion of a vehicle body with a pair of left and right front wheels secured thereto, the joint member including a roll shaft extending substantially in the longitudinal direction of the vehicle body, and connecting to a vertical swing shaft extending in the transverse direction of the vehicle body. In addition, a power unit for supporting the two rear wheels is connected to a rear portion of the joint member by means of the vertical swing shaft, thereby allowing the power unit to be secured to the vehicle body rollably and swingably.

Claims14

Dependent claims

A rear wheel suspension system for a vehicle comprising:

a joint member mounted on a rear portion of a vehicle body with a pair of right and left front wheels secured thereto, the joint member includes a roll shaft extending substantially in a longitudinal direction of the vehicle body;
a vertical swing shaft extending in a transverse direction of the vehicle body;
a rear wheel support member combined with a power unit for supporting rear wheels;
and
two rear shock absorbers mounted between and connecting the power unit and the vehicle body;
wherein said rear wheel support member for supporting rear wheels is connected to a rear portion of said joint member by means of said vertical swing shaft, thereby allowing said rear wheel support member to be secured to the vehicle body rollably and swingably.

3 more elements

The rear wheel suspension system for a vehicle comprising:

a joint member mounted on a rear portion of a vehicle body with a pair of right and left front wheels secured thereto, the joint member includes a roll shaft extending substantially in a longitudinal direction of the vehicle body member;
a vertical swing shaft extending in a transverse direction of the vehicle body,
a rear wheel combined with a power unit for supporting rear wheels;
and
a rear wheel combined with a power unit for supporting rear wheels;
and
two rear shock absorbers mounted between and connecting the power unit and the vehicle body;
wherein said rear wheel support member for supporting rear wheels is connected to a rear portion of said joint member by means of said vertical swing shaft, thereby allowing said rear wheel support member to be secured to the vehicle body rollably and swingably, and
wherein the joint member is provided with a bearing for supporting said roll shaft, and a damper is disposed between said roll shaft and said bearing, and a locking mechanism for locking a relative rotation between the roll shaft and the case body.

6 more elements

Dependencies are inferred from the claim text.

Rear wheel suspension system in vehicle

Life of this patent

Rear wheel suspension system in vehicle

Life of this patent

Abstract

Claims14